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Finding the Fourth Proportional to 62,980.98, 86,909.76 and 34,686.66

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Solution

The fourth proportional to 62,980.98, 86,909.76 and 34,686.66 is: 47,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.98 : 86,909.76 = 34,686.66 : x
  2. Step 2: Convert to fraction form
    62,980.98/86,909.76 = 34,686.66/x
  3. Step 3: Cross multiply
    62,980.98x = 86,909.76 × 34,686.66
  4. Step 4: Simplify right side
    62,980.98x = 3,014,609,621.71
  5. Step 5: Solve for x
    x = 3,014,609,621.71/62,980.98
  6. Step 6: Final answer
    x = 47,865.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.